#include <stdio.h>
int main()
{  	 	   
    int year;
    printf("Input a year:");
    scanf("%d", &year);
    if ((year % 4 == 0 && year % 100 != 0) || year % 400 == 0)
        printf("%d is a leap year\n",year);
    else
        printf("%d is not a leap year\n",year);
    return 0;
}